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Final Thesis 3.pdf (16.79 MB)

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Experimental and Simulated Analysis of Voltage Stress Within a Bar-Wound Synchronous Machine Excited by a Silicon Carbide Inverter

Kelly, Brennan James
http://rave.ohiolink.edu/etdc/view?acc_num=osu1619111736344023

Abstract Details

2021, Master of Science, Ohio State University, Electrical and Computer Engineering.
Advancements in semiconductor technology present new challenges in electric machine construction, operation, and control. Silicon carbide (SiC)-based power electronics are becoming the new standard for high-power consumer and commercial devices, and are implemented in technologies such as power inverters, converters and rectifiers. This paper focuses on the effects of inverter drives for traction motors in electric vehicles with high dV/dt rates on bar-wound machine windings, including the expected impacts on insulation materials under prolonged periods of high voltage stress. Partial discharge inception voltage testing was performed to evaluate the voltage bus level at which breakdown will start to occur. A simulation model was constructed using finite element analysis, the results of which were validated with experimental results using a commercially available SiC inverter and traction motor. Correlation has been established between the preliminary simulation results and experimental data. It is proven that as DC bus voltages increase with the capabilities of SiC devices, the voltage stresses inside the stator windings approach levels which could cause partial discharge and premature insulation degradation in existing stator designs.
Julia Zhang (Advisor)
Jin Wang (Committee Member)
136 p.
Alternative Energy; Design; Electrical Engineering; Electromagnetics; Electromagnetism; Energy; Engineering; Solid State Physics; Sustainability; Transportation
hairpin windings; bar windings; insulation; motor; inverter; silicon carbide; SiC; electric vehicle; EV; stator; voltage stress

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Citations

  • Kelly, B. J. (2021). Experimental and Simulated Analysis of Voltage Stress Within a Bar-Wound Synchronous Machine Excited by a Silicon Carbide Inverter [Master's thesis, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1619111736344023

    APA Style (7th edition)

  • Kelly, Brennan. Experimental and Simulated Analysis of Voltage Stress Within a Bar-Wound Synchronous Machine Excited by a Silicon Carbide Inverter. 2021. Ohio State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1619111736344023.

    MLA Style (8th edition)

  • Kelly, Brennan. "Experimental and Simulated Analysis of Voltage Stress Within a Bar-Wound Synchronous Machine Excited by a Silicon Carbide Inverter." Master's thesis, Ohio State University, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=osu1619111736344023

    Chicago Manual of Style (17th edition)

osu1619111736344023
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This open access ETD is published by The Ohio State University and OhioLINK.